nelson



(No Model.) 2 Sheets-Sheet 1. N. NELSON. COMBINED SOOURING, POLISHING,AND BUFFING MACHINE.

No. 492,099. Patented Feb. 21, 1893.

' 2 Sheetg-Sheet 2 I Q N. NELSON. COMBINED SGOURING, POLISHING, ANDBUPFING MACHINE.

(No Model.)

Patented Feb. 21, 1893.

NELS NELSON, OF CHICAGO,

ATEN ILLINOIS, ASSIGNOR TO GUSTAV DITTMANN, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 492,099, dated February21, 1893.

Application filed September 29, 1892. Serial No, 447,309. (No model.)

To an whom it may concern.-

Be it known that I, NELS NELSON, a citizen of the United States,residing at Chicago, Cook county, Illinois, have invented a new anduseful Improvement in Combined Scour-ing, Polishing, and BuffingMachines, of which the following is a specification.-

My invention relates to scouring, polishing and buffing machines, andhas for its object to provide means for treating metallic plates,particularly such as stove-board plates. It is illustrated in theaccompanying drawings, wherein:

Figure 1, is a side view of the machine. Fig. 2, is a longitudinalsection. Fig. 3, is a front view with parts broken away. Fig. 4, 1s across section.

Like parts are indicated by the same letter in all the figures.

A A are the framing pieces wherebyasuit able frame is made. B is a drumthereon having the adjustable clamping strips 0 0 arranged about itscircumference, and the pulley D at one side, on which runs the drivingbelt E. These adjustable clamping devices consist each of a pivotedtransverse strip 0, which is adapted when in position to complete theperiphery of such drum. At each end of these strips there is ascrew-threaded aperture into which the bolt 0 takes, and these screwbolts are secured in the cross bar C and have' each a beveled gear 0engaging each a like gear 0 on the shaft 0 which projects through theside of the drum at O and is adapted to be engaged and driven by a keyor crank to raise and lower, and thus operate the clamping strip. Theremay be any desired number of these adjustable clamping strips. Thedriving pulley D is in two parts, fast and loose, and it is supported onthe axle or shaft D. Above the drum and supported on the frame isareceptacle E, having the fluid chamber E and the powder chamber E Atthe bottom of the chamber E is a close fitting roller E and at thebottom of the chamber E is a grooved roller E Both of these rollers areoperated by frictional contact with the drum. Disposed about the drumand journaled on shafts on the frame, are four rollers, F being a brushroller, G a grinding roller, covered with emery or the like and H Hbuffing rollers, covered with buffing cloth.

Each of these rollers is mounted at each end R R are counter shaftsonthe top of the frame, provided each with a fast and loose pulley S ateach end and a fast and loose intermediate pulley T. By means of theinter- 4 mediate pulleys the two counter shafts are driven, and by meansof belts U U each shaft drives two of the rollers, the said rollersbeing provided with pulleys VV to receive such belts.

W W are a series of friction rollers about the drum and adjustablysupported by means of the screw-bolts X X which pass into the journalboxes of such rollers and through supporting pieces Y Y on the frame.

Many of these features and details could be changed or omitted, or theirrelative positions varied somewhat without departing from the spirit ofmy invention.

Theuse and operation of my invention are as follows: The sheets of metalto be treated are cutin properlengthsand are clamped underthe clampingstrips so as to be secured at one end to the drum. The drum is belted tothe driving shaft so as to rotate very slowly and the two rollers at thebottom of the receptacles are quite closely held against the drum. Asthe plate advances, it is moistened by the liquid, and any suitableliquid can be employed for this purpose, and as it still fartheradvances a certain amount of grinding or polishing material, as of somesuitable powder is discharged upon the moistening plate. The platecontinuing to slowly revolve is met by the brush roller which is drivenat a relatively high rate of speed, as are all of the rollers except thefriction rollers and the surface of such plate is cleansed and purified.The plate .continues its course until it encounters the grinding roller,where its surface is sharply ground or polished. The rotation of thedrum carries the plate forward and as it successively passes under thebuftling rollers, it is brought to a high polish. The arrangement ofbelts and pulleys is such that any one or more of these said rollers maybe simultaneously in operation. By operating the crank handle connectedwith the mechanism for moving such rollers to or from the drum any oneor all of them maybe withdrawn from operative contact with the drum, ormay be held with greater firmness against the drum. The friction rollersserve to hold the plate in close contact with the drum as it passesaround and they may be adjustable, according to wear or the thickness ofthe plate being treated. lVhen the plate emerges, the speed of therotation of the drum is such that the key may be applied, the plateloosened and another be inserted and clamped without iiitering with theoperation of the machine or the progress of the drum, thus the action ofthe machine is continuous and any given plate may be suitered to remainin operation until it is satisfactorily polished. The treatment of theplate between curved surfaces, that is, by a curved roller which engagesthe plate as it is bent about a curved roller, renders the cleaning andpolishing operation more complete and perfect, for the line of actualcontact at any given instant is very narrow.

I claim 1. In a scouring, polishing and buffing machine the combinationof a drum driven at slow speed, with a series of rollers about the sameand each independent driven at relatively high speed, and a series ofclamps whereby metallic plates may be secured to the surface of suchdrum the rollers rotating in a direction opposite to the drum.

2. In a scouring, polishing and buffing machine the combination of adrum with means for securing metallic plates on the surface thereof,polishing rollers, and a two-part recepta cle for liquid and powder, androllers at the bottom of each and in frictional contact with the drum.

In a scouring, polishing and buffing inachine the combination of a drumwith means for securing metallic plates on the surface thereof,polishing rollers, and a two-part rcceptacle for liquid and powder, androllers at the bottom of each and in frictional contact with the drum,and the fluid roller being cylindrical and the powder roller beinggrooved.

4. In a scouring, polishing and buffing machine the combination of adrum with a series of clamps for securing metallic plates thereon, and aseries of rollers about the same and each independently driven atarelatively higher speed than the drum, the first rollera brush roller,the second an emery roller, and the third buffing cloth rollers therollers rotating in a direction opposite to the drum.

5. In a scouring, polishing and buffing machine the combination of adrum with a series of clamps for securing metallic plates thereon, and aseries of rollers about the same and each independently driven atarelatively higher speed than the drum, and a series of friction rollersaboutthe drum, all of said rollers being adjustable to and from the drumthe rollers rotating in a direction opposite to the drum.

6. The combination of a drum with a series of transverse clampingstrips, screw rods connected therewith and a shaft and gears, so that bythe turning of said shaft the clamping strips may be raised or lowered.

7. The combination of a drum with aseries of rollers to engagetherewith, a series of clamps on the drum to hold the metallic platesand carry them beneath the rollers, screw rods associated with theboxes, by which such rollers are supported, and pinions and a transverseshaft and crank whereby such rollers may be reciprocated to or from thedrum.

NELS NELSON.

\Vitnesses:

FRANCIS W. PARKER, WALTER J. GUNTHORP.

